NGCP: Visayas grid under yellow alert on Wednesday, June 10, 2026

The Visayas grid will be placed under yellow alert for five hours on Wednesday due to high demand and the unavailability of several power plants, the National Grid Corporation of the Philippines (NGCP) said.

In an advisory, the NGCP said the yellow alert would be in effect from 3 p.m. to 8 p.m.

The grid operator said available capacity was projected at 2,556 megawatts (MW), while peak demand was expected to reach 2,423 MW.

According to the NGCP, a total of 35 power plants were unavailable or operating at reduced capacity, resulting in 893.8 MW being unavailable to the grid.

It said seven plants are on forced outage in June 2026, eight plants are on forced outage since May 2026, one plant since March 2026, three plants since 2025, two plants since 2024, two plants since 2023, and one plant since 2021, while 11 plants are running on derated capacities.

The factors that contributed to the yellow alert declaration are the unavailability of Visayas' large coal plants Therma Visayas Inc. (TVI) 1, TVI 2, and Panay Energy Development Corp. (PEDC) 3, and high demand forecast, NGCP said.

A yellow alert indicates that the operating margin is insufficient to meet the transmission grid’s contingency requirement.—AOL, GMA News